introvert

introvert
    n 1: (psychology) a person who tends to shrink from social
         contacts and to become preoccupied with their own thoughts
         [ant: {extravert}, {extrovert}]
    v 1: fold inwards; "some organs can invaginate" [syn:
         {invaginate}, {introvert}]
    2: turn inside; "He introverted his feelings"
    

Introvert \In`tro*vert"\, v. t. [imp. & p. p. {Introverted}; p.
   pr. & vb. n. {Introverting}.] [Pref. intro- + L. vertere,
   versum, to turn.]
   [1913 Webster]
   1. To turn or bend inward. "Introverted toes." --Cowper.
      [1913 Webster]

   2. To look within; to introspect. --Lew Wallace.
      [1913 Webster]
    

Introvert \In"tro*vert`\, n.
   1. A person who is introverted; one concerned predominantly
      with himself or his own feelings. Contrasted with
      {extrovert}.
      [PJC]

   2. A person who is shy.
      [PJC]

   3. (Zool.) A part that can be introverted[1].
      [PJC]
    

38 Moby Thesaurus words for "introvert":
      ambivert, choleric, convert, cycloid, cyclothyme, cyclothymic,
      ectomorph, endomorph, evert, extrovert, intussuscept, invaginate,
      inverse, invert, melancholic, mesomorph, phlegmatic, pronate,
      resupinate, reverse, revolve, rotate, sanguine, schizoid,
      schizothyme, supinate, syntone, transpose, turn about, turn around,
      turn down, turn in, turn inside out, turn out, turn over,
      turn the scale, turn the tables, turn upside down